Potlatch 0.11b

[rails.git] / public / javascripts / site.js

diff --git a/public/javascripts/site.js b/public/javascripts/site.js
index 95c0b938e3938fe89675fbabd2d55302ccef78b2..ae38ecb6a53914239c903a252ba9aa4d83c13d57 100644 (file)
--- a/public/javascripts/site.js
+++ b/public/javascripts/site.js
@@ -1,4 +1,6 @@
-function updatelinks(lon,lat,zoom,layers) {
+//Called as the user scrolls/zooms around.
+//Maniplate hrefs of the view tab and various other links
+function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat) {
   var decimals = Math.pow(10, Math.floor(zoom/3));
   var node;
 
@@ -55,6 +57,31 @@ function updatelinks(lon,lat,zoom,layers) {
       node.style.fontStyle = 'italic';
     }
   }
+  
+  node = document.getElementById("historyanchor");
+  if (node) {
+    if (zoom >= 11) {
+      var args = new Object();
+      //set bbox param from 'extents' object
+      if (typeof minlon == "number" &&
+         typeof minlat == "number" &&
+         typeof maxlon == "number" &&
+         typeof maxlat == "number") {
+      
+        minlon = Math.round(minlon * decimals) / decimals;
+        minlat = Math.round(minlat * decimals) / decimals;
+        maxlon = Math.round(maxlon * decimals) / decimals;
+        maxlat = Math.round(maxlat * decimals) / decimals;
+        args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
+      }
+      
+      node.href = setArgs("/history", args);
+      node.style.fontStyle = 'normal';
+    } else {
+      node.href = 'javascript:alert("zoom in to see editing history");';
+      node.style.fontStyle = 'italic';
+    }
+  }
 }
 
 function getArgs(url) {